Avast PRo and migration SBS domain

Hi,

I have SBS Avast Suite. I just change SBS machine for new machine. I don’t migrate, I create a new domain name and I disconnect stations for the old domain to reconnect on the new domain with SBS feature http://name_of_sbs/connectcomputer . When I do this everything is find, even the proxy web. But Avast does not do the udate anymore, on the station I always have to do Avast update manually. I maintain also some SBS and I have portable Dell computer, and something I have to disconnect from my domain to connect for test on the domain of my customer and alsways I have same troubles, on this PC I am not in managed mode.
Do you have any idea to fix this trouble.

Regards.
GG.

hi,
message I have on station is
Information à propos de la mise à jour en cours :
Dernière erreur trouvée : Autre erreur HTTP (403), en essayant 70.87.64.10:80//iavs4x/servers.def


regards.
GG.